<template>
	<view>
		<!-- 用户头像与信息 -->
		<view class="user_info">
		  <view class="user_icon">
		    <image :src="imgDetail.user.avatar" mode="widthFix"></image>
		  </view>
		  <view class="user_desc">
		    <view class="user_name">{{imgDetail.user.name}}</view>
		    <view class="user_time">{{imgDetail.cnTime}}</view>
		  </view>
		</view>
		<!-- 图片区域 -->
		<view class="high_img">
		  <swiper-action @swiperAction="handleSwiperAction">
		    <image
		      mode="widthFix"
		      :src="imgDetail.thumb"
		    ></image>
		  </swiper-action>
		</view>
		<!-- 点赞收藏区域 -->
		<view class="user_rank">
		  <view class="rank">
		    <text class="iconfont icondianzan">{{imgDetail.rank}}</text>
		  </view>
		  <view class="user_collect">
		    <text class="iconfont iconshoucang">收藏</text>
		  </view>
		</view>
		
		<!-- 专辑区域 -->
		<view class="album_wrap" v-if="album.length">
		  <!-- 标题 -->
		  <view class="album_title">相关</view>
		  <!-- 内容 -->
		  <view class="album_list">
		    <view
		     class="album_item"
		     v-for="item in album"
		     :key="item.id">
		      <view class="album_cover">
		        <image :src="item.cover" mode="aspectFill"></image>
		      </view>
		      <!-- 右边 -->
		      <view class="album_info">
		        <view class="album_info_text">专辑</view>
		        <view class="album_name">{{item.name}}</view>
		        <text class="iconfont iconiconfontjiantou4"></text>
		      </view>
		    </view>
		  </view>
		</view>
		
		<!-- 最热评论 -->
		<view class="comment hot" v-if="hot.length">
			<view class="comment_title">
				<text class="iconfont iconhot1"></text>
				<text class="comment_text">最热评论</text>
			</view>
			<view class="comment_list">
				<view class="comment_item" v-for="item in hot" :key="item.id">
					<!-- 用户信息区域 -->
					<view class="comment_user">
					  <!-- 用户头像 -->
					  <view class="user_icon">
					    <image mode="widthFix" :src="item.user.avatar"></image>
					  </view>
					  <!-- 用户名称 -->
					  <view class="user_name">
					    <view class="user_nickname">{{item.user.name}}</view>
					    <view class="user_time">{{item.cnTime}}</view>
					  </view>
					  <!-- 用户徽章 -->
					  <view class="user_badge">
					    <image v-for=" item2 in item.user.title" :key="item2.icon" :src="item2.icon"></image>
					  </view>
					</view>
					<!-- 用户评论信息区域 -->
					<view class="comment_desc">
					  <view class="comment_content">{{item.content}}</view>
					  <view class="comment_like">
					    <text class="iconfont icondianzan">{{item.size}}</text>
					  </view>
					</view>
				</view>	
			</view>
		</view>
		
		<!-- 最新评论 -->
		<view class="comment new" v-if="comment.length">
			<view class="comment_title">
				<text class="iconfont iconpinglun"></text>
				<text class="comment_text">最新评论</text>
			</view>
			<view class="comment_list">
				<view class="comment_item" v-for="item in comment" :key="item.id">
					<!-- 用户信息区域 -->
					<view class="comment_user">
					  <!-- 用户头像 -->
					  <view class="user_icon">
					    <image mode="widthFix" :src="item.user.avatar"></image>
					  </view>
					  <!-- 用户名称 -->
					  <view class="user_name">
					    <view class="user_nickname">{{item.user.name}}</view>
					    <view class="user_time">{{item.cnTime}}</view>
					  </view>
					  <!-- 用户徽章 -->
					  <view class="user_badge">
					    <image v-for=" item2 in item.user.title" :key="item2.icon" :src="item2.icon"></image>
					  </view>
					</view>
					<!-- 用户评论信息区域 -->
					<view class="comment_desc">
					  <view class="comment_content">{{item.content}}</view>
					  <view class="comment_like">
					    <text class="iconfont icondianzan">{{item.size}}</text>
					  </view>
					</view>
				</view>	
			</view>
		</view>
		
		<!-- 下载图片区域 -->
		<view class="download">
		  <view class="download_btn" @click="handleDownload">下载图片</view>
		</view>
			
	</view>
</template>

<script>
	import moment from "moment"
	import swiperAction from "../../components/swiperAction.vue"
	moment.locale("zh-cn")
	export default {
		data() {
			return {
				// 图片信息对象 包含着用户头像。。
				imgDetail: {},
				// 专辑数据 数组
				album: [],
				// 最热评论
				hot: [],
				// 最新评论
				comment: [],
				// 图片的索引
				imgIndex: 0
			}
		},
		components: {
			swiperAction
		},
		onLoad() {
			const { imgIndex } = getApp().globalData
			this.imgIndex = imgIndex
			this.getData()
		},
		methods: {
			// 给当前页面赋值
			getData() {
			  const { imgList } = getApp().globalData;
			  this.imgDetail = imgList[this.imgIndex];
			
			  // xxx年前的数据
			  this.imgDetail.cnTime = moment(this.imgDetail.atime * 1000).fromNow();
			
			  // 获取图片详情的id
			  // this.imgDetail.id
			  this.getComments(this.imgDetail.id);
			},
			getComments(id) {
			  this.$request({
			    url: `http://157.122.54.189:9088/image/v2/wallpaper/wallpaper/${id}/comment`
			  }).then(result => {
			    // console.log(result);
			    this.album = result.res.album;
			
			    // 给hot数组中的对象添加一个时间属性 xxx月前
			    result.res.hot.forEach(
			      v => (v.cnTime = moment(v.atime * 1000).fromNow())
			    );
			    result.res.comment.forEach(
			      v => (v.cnTime = moment(v.atime * 1000).fromNow())
			    );
			
			    this.hot = result.res.hot;
			    this.comment = result.res.comment;
			  });
			},
			// 滑动事件
			handleSwiperAction(e) {
				// console.log(e)
			  /* 
			 1 用户 左滑 imgIndex++  
			 2 用户 右滑 imgIndex-- 
			 3 判断 数组是否越界问题！！
			 4 左滑 e.direction==="left"&&this.imgIndex<imgList.length-1 
			 5 右滑 e.direction==="right"&&this.imgIndex>0
			  */
			  const { imgList } = getApp().globalData
			  if (e.direction === "left" && this.imgIndex < imgList.length - 1) {
			    //  可以进行 左滑 加载下一页
			    this.imgIndex++;
			    this.getData();
			  } else if (e.direction === "right" && this.imgIndex > 0) {
			    // 右滑 加载上一页
			    this.imgIndex--;
			    this.getData();
			  } else {
			    uni.showToast({
			      title: "没有图片了",
			      icon: "none"
			    });
			  }
			},
			// 点击下载图片 async await promise
			async handleDownload() {
			  // uni.downloadFile
			  // uni.saveImageToPhotosAlbum	
			  await uni.showLoading({
			    title:"下载中"
			  })
			
			  // 1 将远程文件下载到小程序的内存中 tempFilePath
			  const result1 = await uni.downloadFile({ url: this.imgDetail.img });
			  const { tempFilePath } = result1[1];
			
			  //  2 将小程序内存中的临时文件下载到本地上
			  const result2 = await uni.saveImageToPhotosAlbum({ filePath: tempFilePath });
			  // console.log(result2);
			  // 3 提示用户下载成功
			  uni.hideLoading()
			  await uni.showToast({
			    title:"下载成功"
			  })
			}
		}
	}
</script>

<style lang="scss"  scoped >
.user_info {
  display: flex;
  padding: 20rpx;
  .user_icon {
    padding: 0 20rpx;
    image {
      width: 88rpx;
      border-radius: 50%;
    }
  }

  .user_desc {
    .user_name {
      color: #000;
      font-weight: 600;
    }

    .user_time {
      color: #ccc;
      font-size: 24rpx;
      padding: 10rpx 0;
    }
  }
}
.user_rank {
  display: flex;
  height: 80rpx;
  border-bottom: 5rpx solid #eee;
  .rank {
    display: flex;
    justify-content: center;
    align-items: center;

    flex: 1;
    .iconfont {
    }
  }

  .user_collect {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    .iconfont {
    }
  }
}

.high_img {
  image {
    border-bottom: 1rpx solid #eee;
  }
}

// 专辑
.album_wrap {
  padding: 20rpx;
  .album_title {
    padding: 10rpx 0;
  }

  .album_list {
    .album_item {
      display: flex;
      padding: 10rpx 0;
      border-bottom: 10rpx solid #eee;
      .album_cover {
        flex: 1;
        image {
          width: 180rpx;
          height: 180rpx;
        }
      }

      .album_info {
        flex: 3;
        padding-left: 20rpx;
        position: relative;
        .album_info_text {
          width: 100rpx;
          height: 50rpx;
          background-color: $color;
          color: #fff;
          display: flex;
          justify-content: center;
          align-items: center;
        }

        .album_name {
          padding: 10rpx 0;
          color: #888;
        }
        .iconfont {
          font-size: 40rpx;
          position: absolute;
          top: 50%;
          // css3 变换 转换
          transform: translateY(-50%);
          right: 10%;
          color: #000;
        }
      }
    }
  }
}

// 最热评论
.comment {
  .comment_title {
    padding: 15rpx;
    .iconfont {
      color: red;
      font-size: 40rpx;
    }

    .comment_text {
      font-weight: 600;
      font-size: 28rpx;
      color: #666;
      margin-left: 10rpx;
    }
  }

  .comment_list {
    .comment_item {
      border-bottom: 15rpx solid #eee;
      // 用户信息
      .comment_user {
        display: flex;
        padding: 20rpx 0;
        .user_icon {
          width: 15%;
          display: flex;
          justify-content: center;
          align-items: center;
          image {
            width: 90%;
          }
        }

        .user_name {
          flex: 1;
          .user_nickname {
            color: #777;
          }

          .user_time {
            color: #ccc;
            font-size: 24rpx;
            padding: 5rpx;
          }
        }

        .user_badge {
          image {
            width: 40rpx;
            height: 40rpx;
            display: inline-block;
          }
        }
      }
      // 评论数据
      .comment_desc {
        display: flex;
        padding: 30rpx 0;
        .comment_content {
          flex: 1;
          padding-left: 15%;
          color: #000;
        }

        .comment_like {
          text-align: right;
          .icondianzan {
          }
        }
      }
    }
  }
}

// 最新评论
.new {
  .iconpinglun {
    color: red !important;
  }
}

// 下载
.download {
  height: 120rpx;
  display: flex;
  align-items: center;
  justify-content: center;
  .download_btn {
    width: 100%;
    height: 100%;
    background-color: $color;
    color: #fff;
    font-size: 50rpx;
    font-weight: 500;
    display: flex;
    justify-content: center;
    align-items: center;
  }
}
</style>
